Histamine blockers are also known as which of the following?

Histamine blockers are indeed referred to as antihistamines. These medications work by antagonizing the effects of histamine, a chemical released during allergic reactions and that plays a key role in regulating various physiological functions. Antihistamines primarily help alleviate symptoms associated with allergic reactions, such as itching, sneezing, runny nose, and watery eyes, by blocking the H1 histamine receptors.

Understanding their primary function as antihistamines distinguishes them from other classes of medications. For instance, decongestants primarily relieve nasal congestion by constricting blood vessels in the nasal passages, which is a different mechanism. Antivirals focus on treating viral infections, and analgesics are aimed at pain relief. Thus, antihistamines specifically target and block histamine responses, making them the correct classification for histamine blockers.